这个代码什么意思啊

Question

def __str__(self):
        if self.p < self.q:
            k = self.p
        else:
            k = self.q
        for x in range(k, 0, -1):
            if self.p%x==0 and self.q%x == 0:
                self.p = self.p / x
                self.q = self.q / x
                break
        return '%s/%s' % (self.p, self.q)

Answer 1

p,q都是数值的话，就是以p为分子，q为分母的最简分数。